In which, Primo and his Guardians decide to raise Tsuna in Iemitsu's place, and it changes Tsuna's life for the better. Set in the same verse as Giotto's fury and Long talk.
When Tsuna decided to visit her cousin, this isn't what she had in mind. Not at all. She wanted to rest from the mafia, not to discover the world of yokai! Or, in which Tsuna reunites with her childhood crush, Night Rikuo is too much like his grandfather when it comes to wooing a girl he likes, and Nurarihyon and Giotto are amused by it all. Fem!Tsuna/Rikuo.